Vince-
You also have to realize just because there were 30 kids in the 220-285 range were they all from the same school? No they were all spread out one from each or possibly two. I do not see a valid point in your point there.
Also the reason for the kids getting larger is largely due in part to physical inactivity, thus do they participate in sports especially as demanding as wrestling?
view this website,
http://www.asbj.com/evs/05/studenthealth.html , and click on the average weight button on the right side of the article. It shows that the average high school male weighs 150.3 compared to the 135.5 in 1966. They have grown by 15lbs, thus the 10 lbs increase in the upperweights, so to duely justify that shift should we shift all the weights up 10lbs?
I couldn't find a chart showing the weight distribution of 18 year old males now, but I'm sure the 50th percentile would lie somewhere around 140-155lbs range, not anywhere near the 170-185 range justifying more weight classes up there.
Vince if you can find me the chart that shows where the median lies in the 50th percentile in the 170-185 range I'll join your cause to get another weight class. Until then i'll keep proving we don't need another weight class.